Pedestal



PEDIEIS TAL Fild Maw 15) 1920 Federated Apr. 2d, 1922.,

FFDWWFM,

hppllteatton illled may 19, 1999. ltlerilal 11o. 991,999.

1 o all whom t may concerne:

Fe it llmown that l, lhno lDos'ran, residin at Kladno in the country of Bohemia an @tate of dzechoslovakia, have invented cer- 5 tain new and usetul improvements in Fedestals (for which ll have nled a plications in Germany, dune 19, 1918, atent No. 321,989; Austria, June 17, 1918, Fatent No. 91,021; France, June 1, 1920; Fatent No.

1o 516,227; Luxemburg, April 25, 1920, Fatent lilo. 11,726; Sweden April 22, 1920; Flor- Way lua 27, i920; neigium april 2e, i920; llnglan April 30, 1920; tCzechoslovakia, Adpril 13, 1920), @it which the following is a it speciiication.

'Fhis invention has for its ohject to provide an improved hearing which is adapted to take strains acting alternately in varying radial directions and to provide a hearing 99 su port without any play uch hearings are required frequently and more particularly in rolling mills for the top roll in order that the latter shall not drop on to the lower hearing surface he- 111 tween the passes, and shoot up again when the rolling ot material begins atresh.

For this reason hangers have been used hitherto in rolling mills, and have heen adapted to he pressed against the roll necks ao hy means o1 special screws with a predetermined initial strain in erection that is at least equal to the pressure component due to the weight of the top roll and also satishes the requirement that it shall diminish 35 what is known as the spring ct the roll caused hy elastic deltormation.

According to the present invention the improved hearing is divided into two or more hearing rings located side hy side in t@ the arial direction, and each o1 these hearing rings is stressed solely in one oit the directions o1 action oit the forces, while however having any desired amount oit lay (which may also he spring-,controlled in til other directions ot the torces. 1n this man ner, in the altrove-mentioned example o1 the hearing ot the top/roll o1 a rolling rnill, one 4ring takes exclusively the downwardly actin torce due to the weight, whereas the ot er ring takes exclusively the upwardly directed rolling strains.

it' hearing according to this invention constructed hy way o1 example as a top hearing ot a rolling niill is illustrated in the accompanying drawings, in which Figure 1 is a longitudinal section, and

Figure 2 is a vertical cross-section on the lines mand g/-y ot Figure 1.

' rllhe' entire hearing tor the neck e o1 the top roll is divided into a part hearing a and a part hearing b. These two part hearings are located in a coninion housing c. 'lhe two hearing rings d and e are made separate, so that they can move independently l.

and relatively to each other.

'llhe part hearing a (right-hand halt o1" Figure 2) in which the hearing ring 'o1 is mounted, takes the upwardly directed roll-4 ing strains, whereas the part hearing h (left-hand halt ot Figure 2) supports the weight of the roll. The hearing. ring e which contains the rollers r in the part hearing h is supported hy the latter, which is hung trom the housing c hy means ot the housing screws g with, it desired, the interpositicn @t springs yt.

1n view o1 the resulting loending moments the part hearing a that takes the main strains is arranged nearer to the root or inner end of the roll neck, whereas the part h is arranged outwardly thereof nearer to the tree end oit the said neck. 'Fhis arrangement may, however, he reversed. alihe part hearing may also he arrangedat any other point, tor instance hy interrupting or suhdividing the part hearing a..

'llhe entire roll hearing is hung in the roll trame e, and iinds its ahutment in the press screw 7a through the medium oit a pressure hlock z" during rolling operations..

1n all these constructionall forms it is immaterial whether the roll hearing isdesigned as a sliding-triction hearing., or as a hall or roller hearing, a hearing ot the roller type having heen shown in the drawing hy way of examplen Having now described my invention, what I claim as new and desire to secure by Letters Patent is A bearing for rolling mills for taking a 5 plurality ofv strains acting alternately in varying radial directions comprising a plurality of bearing rings arranged axially Side by side, and supporting means for the bearing meansyone of the said rings being resil- 10 ientlym'mounted in such a manner as to keep the periphery of the neck of the roller in contact with the inner surface of the bearing member when there is a wear between the neck and the bearing, as set forth.

In testimony whereof I alix my signature l5 in presence of two witnesses.

LEO DOSTAL. lVitnesses:

KAREL 'SHA, JOSEPH PIA. 

